Inverted arch equipment for tunnel construction

Abstract

The utility model relates to the technical field of tunnel construction, in particular to inverted arch equipment for tunnel construction, which comprises an inverted arch template, a panel is arranged on the bottom surface of the inverted arch template, a keel frame is arranged on the top surface of a panel body, and flanges are arranged on the periphery of the keel frame in an abutting manner; the flanges of the adjacent inverted arch formworks abut against and are aligned to form a flange set, the flange set is arranged in a fixing clamping sleeve in a matched and sleeved mode, the fixing clamping sleeve is of an n-shaped frame structure, and the fixing clamping sleeve is used for connecting and fixing the adjacent inverted arch formworks. According to the fixing clamping sleeve, the inverted arch formwork can be quickly spliced, mounted and dismounted, and the tunnel construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to an invert arch device for tunnel construction. Background Technology

[0002] The construction of the tunnel invert is a crucial step in tunnel construction, including steps such as construction preparation, excavation, support, pouring, and curing. Before pouring, formwork needs to be installed to shape and define the dimensions of the invert, ensuring that it meets design requirements.

[0003] During the installation of the formwork, several invert arch formwork units are usually bolted together. Therefore, each invert arch formwork has several fixing holes on its side wall. During installation, the corresponding fixing holes of two adjacent invert arch formworks need to be aligned, and then the two adjacent formworks are fixed one by one with bolts. The installation is cumbersome, time-consuming and labor-intensive, which reduces the installation efficiency of the invert arch formwork. Alternatively, several invert arch formworks can be fixed together by welding, but the weight of the fixed invert arch formwork is large, which is not convenient for installation and disassembly.

[0004] Therefore, this application provides an invert arch device for tunnel construction to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to provide an invert arch device for tunnel construction, which solves the problems of cumbersome, time-consuming and labor-intensive installation of existing invert arch formwork.

[0006] To solve the above-mentioned technical problems, this utility model provides an invert arch device for tunnel construction, including an invert arch template. The bottom surface of the invert arch template is a panel, and a keel frame is set on the upper surface of the panel body. The keel frame is provided with retaining edges abutting around its perimeter. The retaining edges of adjacent invert arch templates are aligned to form a retaining edge group. The retaining edge group is adapted to be installed in a fixing sleeve. The fixing sleeve is an n-shaped frame structure and is used to connect and fix adjacent invert arch templates.

[0007] A further improvement of the present invention is that the fixing sleeve also includes two symmetrical vertical plates, and a horizontal plate is integrally set at the top of the two vertical plates. The vertical distance between the inner walls of the two vertical plates is equal to the thickness of the edge block assembly.

[0008] A further improvement of this utility model is that: several slots are evenly arranged on the vertical body, the slots are adapted to be fitted with a keel frame, and several anti-slip strips are arranged on the inner side wall of the vertical plate.

[0009] A further improvement of this utility model is that: a stop bar is set parallel to the inner side of the horizontal plate, and the stop bar is used for secondary clamping and fixing when the edge assembly is separated to both sides by external force.

[0010] A further improvement to the technical solution of this utility model is that several handles are provided at intervals on the top surface of the horizontal plate.

[0011] A further improvement of this utility model is that the length of the vertical plate is equal to the length of the side guard, and the height of the vertical plate is 2 / 3 to 3 / 4 of the height of the side guard.

[0012] A further improvement of this utility model is that the fixing sleeve is made of high-strength steel, and the thickness of the vertical plate and the horizontal plate is 20~30mm.

[0013] A further improvement of this utility model is that the anti-slip strip is an arc-shaped strip protruding from the inner wall of the horizontal plate, with a protrusion height of 0.01~0.05mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model provides a tunnel construction invert arch device. The fixing sleeve uses an n-shaped structure to fix adjacent invert arch templates. Compared with conventional bolt fixing, the fixing sleeve can be installed and disassembled quickly. At the same time, the fixing sleeve is made of high-strength steel, and its horizontal and vertical plates are 20~30mm thick. The strength and weight of the fixing sleeve meet the requirements for fixing the invert arch template.

[0016] 2. The invert arch equipment for tunnel construction provided by this utility model allows for the connection and fixation of two adjacent invert arch templates after the adjacent retaining edges of the adjacent invert arch templates are fully fitted and aligned to form a retaining edge group. The retaining edge group is then fitted downwards with a fixing sleeve, and the retaining edge group is fitted into the groove of the fixing sleeve and inserted into the keel frame body. This completes the connection and fixation of two adjacent invert arch templates. The installation is quick, saves time and effort, and improves the efficiency of tunnel construction.

[0017] 3. The present invention provides an invert arch device for tunnel construction. The inner wall of the vertical plate is provided with an anti-slip strip. The anti-slip strip can not only increase the friction with the sidewall and prevent the fixing sleeve from sliding upward during use, but also the slightly protruding anti-slip strip can form an interference fit between the vertical plate and the sidewall assembly, improving the firmness of the connection. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main sectional view of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the edge retaining assembly of this utility model;

[0021] Figure 3 This is a partial enlarged view of the fixing sleeve of this utility model;

[0022] Figure 4 This is a schematic diagram of the card slot structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the anti-slip strip of this utility model.

[0024] In the diagram: 1. Inverted arch formwork; 11. Panel; 12. Keel frame; 13. Edge guard; 14. Edge guard assembly; 2. Fixing sleeve; 21. Vertical plate; 211. Slot; 212. Anti-slip strip; 22. Horizontal plate; 221. Stop strip; 222. Handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The present invention will be further explained below with reference to specific embodiments.

[0029] like Figures 1-5 As shown, this embodiment provides an invert arch device for tunnel construction, including an invert arch template 1. The bottom surface of the invert arch template 1 is a panel 11, and a keel frame 12 is provided on the upper surface of the panel 11. Edge retaining walls 13 are abutted around the keel frame 12. The edge retaining walls 13 of adjacent invert arch templates 1 are aligned to form an edge retaining group 14, which is adapted to be installed in a fixing sleeve 2. The fixing sleeve 2 is an n-shaped frame structure used to connect and fix adjacent invert arch templates 1. Specifically, the invert arch template 1 is an existing product, laid on a steel mesh frame, and concrete is poured through a concrete pouring port opened on the panel 11. The concrete frame 12 is composed of intersecting steel plates, which are perpendicular to the arch formwork 1 to enhance its rigidity and prevent deformation. The side panels 13 are perpendicular to the panel 11 and are used to connect and fix adjacent arch formwork 1. When the adjacent side panels 13 of adjacent arch formwork 1 are fully fitted and aligned to form side panel group 14, the fixing sleeve 2 is fitted downwards to fit the side panel group 14. The slot 211 of the fixing sleeve 2 fits into the frame 12 body, thus completing the connection and fixation of two adjacent arch formwork 1. The installation is quick, time-saving, and labor-saving, improving the efficiency of tunnel construction.

[0030] like Figures 4-5 As shown, in this embodiment, the fixing sleeve 2 also includes two symmetrical vertical plates 21. A horizontal plate 22 is integrally provided at the top of the two vertical plates 21. The vertical distance between the inner walls of the two vertical plates 21 is equal to the thickness of the edge block 14. Several slots 211 are evenly provided on the body of the vertical plate 21. The slots 211 are adapted to be fitted with the keel frame 12. Several anti-slip strips 212 are provided on the inner side wall of the vertical plate 21. The anti-slip strips 212 are arc-shaped strips protruding from the inner wall of the horizontal plate 22, with a protrusion height of 0.01~0.05mm. Specifically, the fixing sleeve 2 consists of two vertical plates 21 and a horizontal plate 22 at its top, forming an n-shaped frame. The horizontal spacing within the fixing sleeve 2 is equal to the thickness of the flange assembly 14, and the width of the slot 211 is equal to the thickness of the steel plate of the frame 12. The anti-slip strip 212 on the inner wall of the vertical plate 21 not only increases the friction with the flange 13, preventing the fixing sleeve 2 from sliding upwards during use, but the slightly protruding anti-slip strip 212 also allows the vertical plate 21 and the flange assembly 14 to form an interference fit, improving the connection's firmness.

[0031] like Figure 3-5As shown, in this embodiment, a baffle 221 is parallel to the middle of the inner sidewall of the horizontal plate 22. The baffle 221 is used for secondary clamping and fixing when the edge assembly 14 is separated to both sides by external force. Specifically, concrete is poured below the panel 11, and part of the panel 11 is driven by the expansion of the concrete to move slightly outward. The distance of the slight movement of the panel 11 is engaged in the grooves on both sides of the baffle 221 body, thereby forming secondary clamping and fixing. Several handles 222 are arranged at intervals on the top surface of the horizontal plate 22. Specifically, two handles 22 are arranged on the top surface of the horizontal plate 22. 2. Under normal conditions, the top surface of the edge retaining assembly 14 abuts against the bottom surface of the retaining strip 221. The retaining strip 221 is 2mm thick. The space enclosed by the retaining strip 221, the horizontal plate 22, and the edge retaining assembly 14 can buffer the expansion deformation of the edge retaining assembly 14. When the edge retaining assembly 14 is subjected to a large flow pull of concrete to both sides, and the edge retaining 13 has a tendency to move to both sides or has slight deformation, two adjacent edge retaining 13 or one of the edge retaining 13 will be stuck into the space formed by the retaining strip 221 and the vertical plate 21 for secondary clamping to prevent the edge retaining 13 from being firmly fixed.

[0032] like Figure 2 , Figure 4 , Figure 5 As shown, in this embodiment, the length of the vertical plate 21 is equal to the length of the side rail 13, and the height of the vertical plate 21 is 2 / 3 to 3 / 4 of the height of the side rail 13; the fixing sleeve 2 is made of high-strength steel, and the thickness of the vertical plate 21 and the horizontal plate 22 is 20 to 30 mm; specifically, the fixing sleeve 2 is relatively thick, and the strength and weight of the fixing sleeve 2 meet the requirements for fixing the inverted arch template 1. The length of the vertical plate 21 is equal to the length of the side rail 13, which facilitates the overall connection and fixing of adjacent inverted arch templates 1. The height of the vertical plate 21 is shorter than the height of the side rail 13, which facilitates the upward force applied from the bottom of the vertical plate 21 with conventional tools (such as a jack) during disassembly, making it easy to disassemble the fixing sleeve 2.

[0033] This utility model provides a working principle of an invert arch device for tunnel construction: During construction, the workers first arrange the invert arch templates 1 side by side on the steel mesh, adjust each adjacent invert arch template 1, and when the adjacent sidewalls 13 of the adjacent invert arch templates 1 are completely aligned to form a sidewall group 14, lift the handle 222 of the fixing sleeve 2 by hand, and fit the fixing sleeve 2 horizontally downward onto the sidewall group 14. Then, the top of the horizontal plate 22 can be tapped with an auxiliary tool such as a rubber hammer to make the top of the sidewall group 14 abut against the bottom of the sidewall strip 221. At the same time, the steel plate of the keel frame 12 is fitted into the slot 211, thus completing the connection and fixation of two adjacent invert arch templates 1. The connection and fixation of other adjacent sidewalls 13 are completed in the same way. Finally, an arch-shaped counterweight frame (the counterweight frame is a product already on the market and will not be described in detail here) is placed above the entire invert arch template 1 body to assist the invert arch template 1 in applying downward pressure to shape the concrete.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tunnel construction invert arch device, characterized in that, The invert arch template (1) is included. The bottom surface of the invert arch template (1) is a panel (11). A keel frame (12) is set on the upper surface of the panel (11). The keel frame (12) is surrounded by a retaining edge (13). The retaining edges (13) of adjacent invert arch templates (1) are aligned to form a retaining edge group (14). The retaining edge group (14) is fitted into a fixing sleeve (2). The fixing sleeve (2) is an n-shaped frame structure. The fixing sleeve (2) is used to connect and fix adjacent invert arch templates (1).

2. The tunnel construction invert arch equipment according to claim 1, characterized in that, The fixing sleeve (2) also includes two symmetrical vertical plates (21), with a horizontal plate (22) integrally set at the top of the two vertical plates (21), and the vertical distance between the inner walls of the two vertical plates (21) is equal to the thickness of the side guard assembly (14).

3. The tunnel construction invert arch equipment according to claim 2, characterized in that, Several slots (211) are evenly arranged on the body of the vertical plate (21). The slots (211) are adapted to be fitted with the keel frame (12). Several anti-slip strips (212) are arranged on the inner side wall of the vertical plate (21).

4. The tunnel construction invert arch equipment according to claim 2, characterized in that, A stop bar (221) is set parallel to the middle of the inner side of the horizontal plate (22). The stop bar (221) is used to clamp and fix the plate to the sides when it is separated by external force between the edge group (14).

5. The tunnel construction invert arch equipment according to claim 4, characterized in that, Several handles (222) are set at intervals on the top surface of the horizontal plate (22).

6. The tunnel construction invert arch equipment according to claim 2, characterized in that, The length of the vertical plate (21) is equal to the length of the side rail (13), and the height of the vertical plate (21) is 2 / 3 to 3 / 4 of the height of the side rail (13).

7. The tunnel construction invert arch equipment according to claim 1, characterized in that, The fixing sleeve (2) is made of high-strength steel, and the thickness of the vertical plate (21) and the horizontal plate (22) is 20~30mm.

8. The tunnel construction invert arch equipment according to claim 1, characterized in that, The anti-slip strip (212) is an arc-shaped strip protruding from the inner wall of the horizontal plate (22), with a protrusion height of 0.01~0.05mm.

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